RU2546135C2 - Air temperature control system for inlet air of internal combustion engine - Google Patents

Abstract

FIELD: engines and pumps.

SUBSTANCE: invention can be used for the automatic temperature control of (TC) of inlet air in the internal combustion engine (ICE). Air TC system of RT contains a cooler, a heat exchanger and IEC air supply channel. TC system also comprises a batcher, inlet and outlet pipeline, an expansion tank, an electric pump, a temperature sensor (TS) and connecting wires. The cooler is connected through the outlet pipeline with the expansion tank, the batcher and the electric pump connected to the heat exchanger connected by the inlet pipeline to the cooler. The cooler is connected to IEC by means of the air supply channel where TS is mounted, which sends control signals through wires to the batcher and the electric pump. DVS is connected by the outlet branch pipe with the heat exchanger.

EFFECT: maintaining of pre-set operating temperature mode in hot climatic conditions.

1 dwg

Description

The technical field to which the invention relates.

The invention relates to engine building, in particular to systems for automatically controlling the temperature of the charge air of an internal combustion engine (ICE), and can be used by vehicles.

The level of technology.

A known method of supplying air to the internal combustion engine, in which the device comprises an engine, a container for storing liquid ammonia, an inlet pipe, a dispenser, an intake manifold (see USSR author's certificate No. 1270384, F02B 29/04, 1986).

The main disadvantage of this device is that the dispenser will not be able to regulate the supply of the required amount of ammonia at variable loads, and at partial loads, the flow of liquid ammonia should be stopped altogether.

A known method of regulating the temperature of charge air, in which the "Device for controlling the temperature of the charge air of the internal combustion engine", containing a channel for supplying charge air to the engine, a turbocharger associated with the air distributor connected to the two channels with the engine through heat exchangers, one of which is designed to cool the charge air and connected to the channels for supplying and discharging sea water, and the other for heating it and connected to a heating source, and the third channel distributor with it is one with the channel for supplying charge air to the engine; it is additionally equipped with an electric psychrometer and its sensor mounted on the channel for supplying charge air to the engine, an electromagnetic valve installed on the overboard water supply channel and an electric actuator connected to the charge air distributor and electrically connected to the electronic the control unit (see patent RU 2184251, F02B 29/04, 2002).

The main disadvantage of this device is that the cooling of the charge air is carried out in the range of 50-40 ° C, which is not enough for the effective operation of the internal combustion engine.

The closest technical solution (prototype) is a “System for controlling the temperature of the charge air of an internal combustion engine” containing a turbocharger, a cooling system, an electric actuator, a four-way valve, a gas distributor, an electric distributor of exhaust gases, channels for supplying charge air to the cooler and heat exchanger, an air supply channel in the engine, a tank with liquid refrigerant and a dispenser according to the invention is connected to the engine cooling system with a program mm regulation through a four-way valve with an electric actuator connected to the control unit, the input of which, when operating at partial loads through the bypass channel, is connected to the charge air heat exchanger, and the output to the engine. In addition, it also contains an electromagnetic valve, the inlet of which is connected to the liquid refrigerant tank, the output is through a metering device to the charge air heat exchanger and is electrically connected to a control unit containing a dew point temperature control device connected to the electromagnetic valve for supplying liquid refrigerant to the heat exchanger, except Moreover, it further comprises an exhaust gas duct from the gas distributor, electrically connected to the control unit and connected to a charge-air heat exchanger in zduha, yield - to channel exhaust system into the atmosphere. In addition, it also contains an electromagnetic valve, the inlet of which is connected to the liquid refrigerant tank, and the outlet is connected via a metering device to the charge air heat exchanger and is electrically connected to a control unit containing a dew point temperature control device connected to the electromagnetic valve for supplying liquid refrigerant to the heat exchanger ( see patent RU 2251021, F02N 17/047, 09/27/2004).

The disadvantage of this device is that the refrigerant (ammonia) is consumed, and together with the air enters the internal combustion engine, which affects the quality of the combustible mixture and negatively affects the details of the engine and its environmental friendliness.

Disclosure of the invention.

The technical result, which can be achieved using the present invention, is to adjust the working temperature of the charge air and maintain a given operating temperature in hot climates.

The technical result is achieved by the fact that the temperature control system of the air entering the internal combustion engine, comprising a cooler, a heat exchanger and an air supply channel to the engine, a liquid refrigerant and a dispenser, an inlet and outlet pipe, an expansion tank, an electric pump, a temperature sensor and connecting wires, the cooler is connected by a discharge pipe to an expansion tank, a dispenser and an electric pump connected to a heat exchanger connected by a supply pipe to the cooler Ie, and the cooler is also connected to the internal combustion engine due to the channel for supplying air to the engine, on which the temperature sensor is mounted, which sends control signals via wires to the dispenser and electric pump, while the internal combustion engine is connected by a discharge pipe to the heat exchanger.

Brief Description of the Drawings

The drawing shows a system for controlling the temperature of the air entering the internal combustion engine.

The implementation of the invention.

The temperature control system of the air entering the internal combustion engine contains a cooler 1, which is connected by a discharge pipe 2 to an electric pump 3, an expansion barrel 4, a dispenser 5 and then connected to a heat exchanger 6, connected by a supply pipe 7 to a cooler 1. Moreover, the cooler 1 is also connected to the internal combustion engine (internal combustion engine) due to the channel 8 for supplying air to the engine, on which the temperature sensor 9 is mounted, which supplies control signals via wires 10 to the electric pump 3 and dispenser 5, at ohm ICE is connected by a discharge pipe 11 with a heat exchanger 6 (drawing).

The temperature control system of the air entering the internal combustion engine operates as follows.

The ammonia-water solution circulates in the system in a closed loop, changing its concentration in cooler 1 and heat exchanger 6. A strong solution has a high concentration of ammonia, a weak solution has a low concentration.

Strong solution from the expansion barrel 4 enters through the discharge pipe 2, through the dispenser 5 to the heat exchanger 6, where it is heated by hot exhaust gases. From the heat exchanger 6, the heated strong solution through the inlet pipe 7 enters the cooler 1, where as a result of the absorption of heat from air (its cooling) entering the engine, the solution boils with the formation of a large part of the ammonia vapor. After exiting the cooler 1, water-ammonia steam through the outlet pipe 2 enters the electric pump 3, and then into the expansion tank 4.

In the expansion tank 4, condensation of ammonia vapor occurs with the release of heat.

Moreover, if the air temperature in the air supply channel 8 in the internal combustion engine is higher than normal (7 ° C norm), then the temperature sensor 9 detects this and sends signals through connecting wires 10 to the electric pump 3 and the dispenser 5 to increase the flow of the ammonia-water solution, and accordingly the electric pump 3 increases the flow of ammonia-water solution, and dispenser 5 increases the throughput of the outlet pipe 2. If the temperature drops below the allowable limit (5 ° C) in the air supply channel 8 in the internal combustion engine, then the air temperature control system entering the internal combustion engine, operates as follows, the temperature sensor 9 detects this and sends signals through the connecting wires 10 to the electric pump 3 and the dispenser 5 to reduce the flow of water-ammonia solution, and accordingly, the electric pump 3 reduces the flow of water-ammonia solution, and the dispenser 5 reduces the capacity of the outlet pipeline 2.

The invention in comparison with the prototype and other known technical solutions has the following advantages:

- universality;

- automated work process;

- the refrigerant is not consumed;

- a closed cycle of movement of the refrigerant, without direct contact with air entering the internal combustion engine;

- environmental friendliness;

- simplicity of design.

Claims (1)

A system for controlling the temperature of the air entering the internal combustion engine, comprising a cooler, a heat exchanger and an air supply channel to the engine, a liquid refrigerant and a dispenser, characterized in that it further includes a supply and exhaust pipe, an expansion tank, an electric pump, a temperature sensor and connecting wires wherein the cooler is connected to a discharge pipe with an expansion tank, a dispenser and an electric pump connected to a heat exchanger connected to a supply pipe with laditelem, wherein the cooler is also connected to the internal combustion engine by the air supply port to the engine, on which is mounted a temperature sensor for supplying control signals on the wires electric pump and dispenser, wherein the discharging pipe is connected to the internal combustion engine with a heat exchanger.

Images